The existence of relationships between a student's score on a personality inventory and his behavior as a teacher at a later time which might facilitate prediction of this behavior was investigated. Seventy students entering the MAT program at Temple University were administered the Minnesota Multiphasic Personality Inventory (MMPI). Six months after the interns began teaching, data on their classroom behavior was collected on two observational instruments (OScAR and Flander's Interaction Analysis). Linear, multiple linear, and curvilinear relationships between the MMPI data and the observational data were studied. Sex differences were also investigated. It was concluded that the MMPI might be useful in predicting future teacher behavior and could be used in conjunction with information obtained from other sources. (TA)